997 Turbo / GT2 2006–2012 Turbo discussion on the 997 model Porsche 911 Twin Turbo.
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997.1TT Leakdown and compression test results

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Old May 8, 2014 | 05:24 PM
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997.1TT Leakdown and compression test results

I just had a thorough PPI done, including a Leakdown and a Compression test.

Compression showed a (I think) perfect result: 200 on all 6 cylinders.

Leakdown shows, in Cylinder sequence #1 through 6:

20, 15, 15, 17, 15, 18

Per the mechanic, this was a good result. Opinions?

This is a stock 2007 997.1TT with 29K miles.
 
Old May 8, 2014 | 07:29 PM
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200 is good, but i question the 20% leakdown across the board, can't be right. What's important is the 5% or less variation.
 
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